The Fireworks Galaxy

又称 NGC 6946 · Caldwell 12

一个被银河系尘埃遮蔽的旋涡星系，产生的超新星数量异常之多。

实测

简介 18百万光年. 穿越它需要：

旅行者1号以截至2026-10-25的一年中向外运动的速度（JPL Horizons）。驾车：不停歇，永不加油。

Tip-of-the-red-giant-branch value 5.52 Mpc as compiled by Lelli et al. 2016, ApJ 816, L14; up to 7.72 Mpc (Eldridge & Xiao 2019, MNRAS Letters)
This research has made use of the SIMBAD database, CDS, Strasbourg, France (Wenger et al. 2000, A&AS 143, 9).
This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier).

由 AI（Opus 5.5）根据英文卡片翻译。数字、名称和来源均未改动。

星系

又称 NGC 6946 · Caldwell 12

一个被银河系尘埃遮蔽的旋涡星系，产生的超新星数量异常之多。

简介 18百万光年. 穿越它需要：

旅行者1号以截至2026-10-25的一年中向外运动的速度（JPL Horizons）。驾车：不停歇，永不加油。

Tip-of-the-red-giant-branch value 5.52 Mpc as compiled by Lelli et al. 2016, ApJ 816, L14; up to 7.72 Mpc (Eldridge & Xiao 2019, MNRAS Letters)
This research has made use of the SIMBAD database, CDS, Strasbourg, France (Wenger et al. 2000, A&AS 143, 9).
This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier).